Kelly went to a store to purchase a coffee pot. She will use a coupon for 20% off. She can calculate the cost before sales tax using the follow expression, c represents the original cost of the coffee pot. C- 0.2c
Which other expression could kelly use to calculate her cost before sales tax?
A. 0.8c
B. 1.2c
C. 1.8c
D. 80c​

Answer:

x=2, y=21

Step-by-step explanation:

there are two methods: substiution and elimation. I will be doing subtistution in this soultion:

first isolate y in either equation, it would be easier to do it in the second one.

y= 11+5x

Then, subtitute that into the first equation

2(11+5x)+8x=58 (it says 2y+8x+58 but I assume you mean 2y+8x=58?)

22+10x+8x=58

18x = 36

x=2

substitute that back into y = 11+5x, to get y=11+10 = 21

9y - 7 = 29

=> 9y = 29 + 7 [Transferring 7 to R.H.S.]

=> 9y = 36

=> y = 36/9 [Transferring 9 to R.H.S.]

=> y = 4

Hence proved.

Answer:

Here

Step-by-step explanation:

kyle is 18 and megan is 9, because 9 + 18 = 27 and 27 / 3 = 9. hope this helps :)

Answer:

Kyle's age = 18 years

Step-by-step explanation:

Let Megan's age = x

Kyle's age = 2x

Combined ages  of Megan and Kyle = 27

x + 2x = 27

   3x = 27           {Divide both sides by 3}

3x/3 = 27/3

x = 9

Megan's age = 9 years

Kyle's age = 2 * 9 = 18 years

Answer: Rational number

Step-by-step explanation:

Answer:

cp=2800

mp=cp+30%of cp=2800+30/100×2800=3640

discount=10%

discount amount=10%ofmp=10/100×3640=364

sp=mp-discount=3640-364=3276

vat=15%

sp with vat=sp+vat%of sp=3276+15/100×3276=3276+491.4=3767.40

The price customers pay for it with 15 % VAT is Rs 3767.40 if the cost price of an electronic fan is Rs 2,800.

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

We have:

The cost price of an electronic fan is Rs 2,800.

Cost with 30% above the cost price = Cost price +30% of cost price

= 2800 + (30×2800)/100

= 3640

Discount = 10%

Discount amount = 10% of 3640 = 364

Discounted price = 3640 - 364 = 3276

VAT = 15%

Discounted price with VAT = 3276 + 15% of 3276

= 3767.40

Thus, the price customers pay for it with 15 % VAT is Rs 3767.40 if the cost price of an electronic fan is Rs 2,800.

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Answer:

198 cm³

Step-by-step explanation:

V = π r² h

V = 22/7 × 3² × 7

V = 22/7 × 9 × 7

V = 22 × 9

V = 198 cm³

Answer: B

Step-by-step explanation: a.p.e.x

Answer:

2.007;2.07;2.09;2.714;2.741

Step-by-step explanation:

2.007 is the least and 2.741 is the greatest

Answer: 2.007, 2.07, 2.09, 2.714, 2.741

Step-by-step explanation:

Answer:

(x, y) = (23, 4)

Step-by-step explanation:

2x - 5y = 26

x - 5y = 3 $\Rightarrow$ x = 3+5y

substituting the value of x ( second equation) into the first equation, we get, 2(3+5y) - 5y = 26. Simplifing, we get,

6+10y - 5y =26

5y = 20

y = 4

So, x = 3+5*4 = 3+20 = 23

Answer:

[tex]\left \{ {{x=23} \atop {y=4}} \right.[/tex]

Step-by-step explanation:

[tex]\left \{ {{2x - 5y =26} \atop {x-5y=3}} \right.[/tex]

you can add 5y to both sides of the second equation:

[tex]x = 5y + 3[/tex]

Then, substitute:

[tex]2(5y + 3) - 5y = 26[/tex]

use the distributive property on the left side:

[tex]10y + 6 - 5y = 26[/tex]

[tex]5y + 6 = 26[/tex]

subtract 6 from both sides

[tex]5y = 20[/tex]

divide both sides by 5

[tex]y = 4[/tex]

Substitute into original equation

[tex]x - 5y = 3 --> x - 5(4) = 3\\x - 20 = 3\\x = 23[/tex]

MN = TS

5x -2 = 3x + 1

Add 2 to both sides:

5x = 3x + 3

Subtract 3x from both sides:

2x = 3

Divide both sides by 2

X = 3/2

Now you have x solve for TS

TS = 3x + 1 = 3(3/2) + 1 = 4 1/2 + 1 = 5 and 1/2

The smaller triangle is 2/3 the size ( 26/39 = 2/3)

5 1/2 x 2/3 =  3 2/3

Answer:

x=55

Step-by-step explanation:

Since the two lines are parallel the two angles are same side exterior. This means their sum is 180. So to solve put them equal to 180, x+9+2x+6=180.

First, combine like terms

3x+15=180

Then, subtract 15 from both sides

3x=165

Finally, divide the entire equation by 3

x=55

Answer:

She started with 50 stamps

Step-by-step explanation:

Hi! For these types of problems we always result to going backwards. So, she now has 30 right? So, to reverse into the problem, we do the opposite of what it says. "She then bought five more" 30 - 5 = 25. Then it says she sold half of them. 25 x 2 = 50. If we recheck by going back, she sold half of them (50 / 2 = 25) and she bought five more (25 + 5 = 30).

Hope this helps!

Answer:

The slope is 3.5 it represents the amount of miles per hour

Step-by-step explanation:

I subtracted 6 from 13 and got 7miles every 2 hours, then I divided 7 by two to get 3.5 miles per hour.

Pls give me brainliest, hope this helped

Answer:

Both functions are decreasing and have different rates of change.

Step-by-step explanation:

Answer:

If your trying to find the volume from those two numbers than the answer is 105 since 15 x 7 = 105 feet

Step-by-step explanation:

Answer:

The answer is A.) a credit

Step-by-step explanation:

I hope this helps!

Answer:

If you ask a banker whether debiting or crediting a liability increases the account’s balance, the financier will tell you it depends on the transaction. The same answer holds true for accounting procedures, even though banking debits and credits are distinct from accounting practices. To understand the effects of journal entries on financial accounts, it’s important to master such terms as liability, record keeping and financial reporting.

If you want to learn more i got my answers from bizfluent.

Answer:

1 minute and 25 seconds per lap or 1.25 minutes.

Step-by-step explanation:

Answer:

r-7

Step-by-step explanation:

9514 1404 393

Answer:

  A: ∠W'Z'Y' = 60°; angles aren't changed by rotation

  B: W'(-3, 6), X'(9, 6), Y'(8, 1), Z'(-4, 1)

Step-by-step explanation:

Part A:

Angle WZY is the supplement of the given angle ZWX, so is ...

  ∠WZY = 180° -120° = 60°

Rotation about the origin (or anywhere else) does not change angles. The new parallelogram will have ...

  ∠W'Z'Y' = 60°

__

Part B:

The transformation right 2 and up 3 can be described by ...

  (x, y) ⇒ (x +2, y +3)

Then the translated vertices are ...

  W(-5, 3) ⇒ W'(-3, 6)

  X(7, 3) ⇒ X'(9, 6)

  Y(6, -2) ⇒ Y'(8, 1)

  Z(-6, -2) ⇒ Z'(-4, 1)

Answer:

1/4

Step-by-step explanation:

Answer:

Firstly, we know that both are parallelograms, if you rotate a little, and both have the same angles in the parallelogram.

Answer:

B

Step-by-step explanation:

1: they didnt mention that its just for a year.

2: the money source cant just be from them.

Answer:

c

Step-by-step explanation:

The table which matches 4x + 7y = 19 is table (d).

Linear equations are equation involving one or more expressions including variables and constants and the variables are having no exponents or the exponent of the variable is 1.

Given is a linear equation,

4x + 7y = 19

(a) When x = -18,

7y = 19 - (4 × -18) = 91 ⇒ y = 13

When x = 1,

7y = 15 ⇒ y = 2.14

So the table (a) is not the one.

(b) When x = -9, 7y = 55, y = 7.857

Table (b) is also not the one.

(c) When x = 0, y = 2.7

Hence (c) is also not an option.

(d) When x = -18, y = 13

When x = -11, 7y = 63, y = 9

When x = -4, 7y = 35, y = 5

So the correct option is table (d).

Hence the correct option is table (d).

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Answer:

both have 5

Step-by-step explanation:

10 divided by 2 equals 5

Answer:

213.04

Step-by-step explanation:

Multiple both by 1.0925 and then subtract from each other.

Answer:

$18.04

Rounded: $18.00

Step-by-step explanation:

Scooter tax: $30.06

Bike tax: $12.02

Hope this helped!

Answer:

1) The amount to be paid as insurance if the revenue increases is $937,000

2) Yes because the total value of the risk insured and the likelihood of the occurrence of the risk both increases

Step-by-step explanation:

1) The given amount in revenue of the Diablo's Domain = $250,000,000

The amount the company paid as insurance  = $750,000

The equivalent amount the company paid as insurance = $3 for every $1,000

The percentage amount in revenue the park revenue increases by = 25%

Therefore, the new amount in revenue = 1.25 × $250,000,000 = $312,500,000

The amount to be paid as insurance if the revenue increases = $315,500,000 × 3/1000 = $937,5000

The amount to be paid as insurance if the revenue increases = $937,000

2) It is reasonable for the insurance cost to increase proportionally when the items insured which leads to the increase in revenue increases because the value of the risk insured which is the event of settlement for losses increases as well as the probability of the risk occurring also increases.

Answer:

a. 2x -3

b. 7

Step-by-step explanation:

a. The expression that represents the difference is sales between the two sales will be:

9x - (7x + 3) = 9x - 7x - 3 = 2x - 3

b. What we do here is to simply substitute the value of 5 for x

mathematically, we have to substitute the value of 5 in the expression above

We have this as:

2(5) -3

= 10-3 = 7

Answer:

2.16

Step-by-step explanation:

r = cost of ruler

p = cost of pencil

r = 2p

6r + 15p = 2.16

Substitute 2p in place of r in 2nd equation and solve for p

6(2p) + 15p = 2.16

12p + 15p = 2.16

27p = 2.16